Filter.



J. M. GOLVEN.

FILTER.

APPLICATION FILED MAY 7, 1914.

Patented Jan.19, 1915.

THE MORRIS PETER -LITHILI WAHINGPON, p, C,

JAMES M. COLVEN, 0F OSSINING, NEi/V YORK.

FILTER.

Application led May '7, 1914.

To all whom it may concern Be it known that l, JAMES M. CoLvnN, a citizen of the United States, and a resident of Ossining, in the county of `Westchester and State of New York, have invented certain new and useful Improvements in Filters, of which the following is a specification.

My invention relates to the type of selfcleaning filter set forth in my Letters Fatent No. 1,099,236, dated June 9th, 191i, designed for the purification of Water and other liquids, in which the flow of liquid is ieversed through the filtering niediuin,-the filter being designed primarily for attachment to a faucet or other source of liquid supply, as when used for the purification of Water for domestic purposes, for the supplying of drinking Water, and for affording clear, uncontaminated Water or liquid for use in the various arts and manufactures.

The object of both inventions is the production of a simple, compact, and effective reversible filter of the character designated, of moderate cost, controlled by a single conical valve plug, only one end of which (that to which the handle is attached) protrudes through the casing, which latter is adapted to receive and support an integral filter cartridge Which may be readily inserted, removed and duplicated When expedient. A distinctive feature of my Letters Patent hereinhefore referred to is the provision of an axial discharge duct in the reversing plug in conjunction With a circuitous discharge passage in the casing, whereby the construction and operation of the iilter as a Whole is simplified and rendered eective. But this axial discharge duct in the reversing plug renders the finishing of the plug diflicult and expensive because it is not adapted for convenient centralization in the finishing lathe; and it is the main object of my present invention to obviate this difiiculty Without iinpairing the practical merits of the plug or filter as attained by said prior invention. y

Hence the present invention consists in the specific construction of the plug itself, the rest of the filter being the same in construction and operation as in my said Letters Patent, and the distinctive feature in the present case being the formation of the plug with a continuous, solid axial center, and with longitudinal peripheral ports which perform the same function as the Specication of Letters Patent.

Patented Jan. i9, 31915. Sera1No.836,881.

port, as hereinafter more fully7 set forth. By this construction the plug may be quickly, conveniently and accurately centralized in the finishing lathe. Furthermore, obviously, in the casting of the plug the central core is dispensed With. which is a further advantage in manufacture, reducing the plug cores from three to two, and these latterI peripheral, and requiring no special skill or accuracy.

in the accompanying drawings, Figure l, is what may be designated as a front elevation of my improved self-cleaning filter; Fig'. 2, a rear elevation; Fig. 3, a right hand side elevation; and Fig. Ll, a left hand side elevation; Fig. 5, is a central vertical section of the fiiter, full size, taken upon plane of line 5-5 '12; Fig. G, a sectional elevation taken upon plane of line 6-6 Fig. Fig. 7, a sectional detail showing means for restricting the axial movement of the reversing plug. Fig. 8, is a detail elevation of the reversing plug in part showing its longitudinal peripheral discharge passages.

The barrel or casing C, is formed With the internally threaded nipple c, for attachment to a Water faucet or other source of liquid supply, and with an inlet c, and lateral c2, leading to circuitous discharge conduit interposed between the inlet aforesaid axial the outlet c3. c', and the discharge conduit o2, is the conical plug F, formed With the peripheral longitudinal discharge passages p', p2, which are in constant end communication With said circuitous discharge conduit c2, (as shown in the case of passage 792, in Fig. 6,) said plug P, being also formed With port p3, communicating With the inlet c, as shown more particularly in Fig. 5,-said peripheral port p3, being approximately semi-circular in extent so as to communicate With either of the internal ports ct, c5, formed in the casing C, as shown particularly in Fig. 5. rihese internal ports c4, c5, communicate with the spaces in the casing C, on either side of the filter cartridge F, when the latter is positioned in said casing as shown in Fig. 5. The filter cartridge F, is cylindrical in form, its closed ends being perforated or intersticed for the passage of the liquid to be filtered, and it is filled or charged with any suitable filtering medium, as sand, charcoal, &c., preferably with a central disk f, of

relatively close porous material practically dividing the filter into compartments and acting as an effectual barrier to the passage lOO through the filter of the foreign matter which it is sought to eliminate from the liquid.

The filter cylinder F, is formed with an annular flange f, which is threaded peripherally to engage with the female thread c, tapped in the body of the casing, which female thread c, not only affords means for positioning the filter cylinder F, but also for the attachment of the closure cap C, as shown in Fig. 5. rIhe flange f', of the filter cylinder F, is formed with the annular shoulder f2, between which and the seat 07, of the casing is interposed a gasket g, which prevents the passage of liquid from one side of the casing to the other except only through the filter F. Gaskets are also interposed between the outer flange c, of the cap C', and the opposed surfaces of the casing as shown .in Fig. 5, to insure against leakage.

The conical portion of the reversing plug P, is accurately ground to a water-tight fit with its seat in the casing C, and is of such length that its shoulder p4, extends slightly beyond the annular packing shoulder 0S, yformed inthe casing for the reception of the gasket g,-said gasket resting upon both said shoulders p4, and o8, `and being interposed between them and the inner surface of thetightening nut n, which iits over the cylindrical portion p* of the reversing plug P, and is formed with a peripheral thread n', for engagement with the female thread o9, in the casing. I thus afford ready and convenient means whereby wear between the reversing plug and its seat may be taken up and compensated for, at the same time insuring a fluid tight joint at the protruding end of the plug, which may be provided with the usual `handle h, or other means whereby it may be partially rotated on its axis, the extent of such motion being limited'by a stop 01, on the casing arranged for engagement with shoulders p5, p, on the plug, as indicated in Figs. 6, and 7, or by resort 'to any other well known mechanical expedient.

In operation when the parts are inthe position shown in Fig. 5, (t e stop 010, being in contact with the shoulder 295,) the iow of liquid will be through the inlet c', peripheral port 103, and internal port c5, to and through the filter F, to the internal port c4,

copies of this patent may he obtained for five cents each, by addressing the and through the peripheral port p, to the circuitous vconduit c?, to be discharged through the outlet c3. By reversing the handle h, until the stop 01, contacts with the shoulder p, the liquid will flow through the inlet c', peripheral port p3, internal port c, filter F, internal port c", and peripheral port p2, to the circuitous conduit c2, and thence through the outlet c3. Thus a simple 1notion, a partial turn of the conical plug from one stop contact to the other, will suffice to reverse the iiow of the liquid and wash out and eliminate from the filter any foreign matter that may have accumulated therein through use; and this reversal may be instantly effected whenever and as often as may be found expedient.

It will be seen that the peripheral discharge passages p', p2, vare an important factor in my present construction and arrangement of parts, enabling me to greatly simplify, and cheapen the device. At the same time I dispense with one end packing for the plug,-the handle end thereof alone projecting through the casing.

What I claim as my invention and desire to secure by Letters Patent is,

A filter of the character designated, comprising a casing adapted for connection with a source of liquid supply, a filter cartridge mounted in said casing and dividing it into two compartments, said casing being formed with ports communicating respectively with said compartments, a valve plug seated in said casing and interposed between said casing ports and the inlet, and formed with longitudinal peripheral discharge ports communicating alternately with ythe casing ports, said plug being also formed with a transverse -peripheral port communicating with the inlet, and alternating with the casing ports, said casing being also formed with a circuitous discharge passage connecting said peripheral discharge passages in the plug permanently with the outlet, whereby the flow of liquid through the filter cartridge may be reversed and the discharge of liquid maintained through either of said peripheral kdischarge assages in the plug, for the purpose descri ed. v

JAMES M. COLVEN.

Witnesses I DoRoTHY Murr,

Gnd WM. MIAT'r.

Commissioner of Iatents,

Washington, D. C. 

